Woofer WS 20 E with a 4 Ohm impedance from the famous brand Visaton. This 200mm woofer is ideal for 2-way applications up to 2000Hz, it can also find its place as a bass / midrange speaker in a 4-way system.
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|Nominal impedance Z||4ohm|
|Outside diameter||236 mm|
|Rated power||80 W|
|Maximum power||120 W|
|Mean sound pressure level||88dB|
|Coil diameter||30 mm|
|Resonance frequency fs||47 Hz|
|Electrical Q factor Qes||1.44|
|Mechanical Q factor Qms||5.56|
|Total Q factor Qts||1.14|
|Dynamically moved mass Mms||23 gr|
|Equivalent volume Vas||39 L|
|Frequency response||47–7000 Hz|
|Le Inductance bobine (Le)||0.7 mH|
|DC resistance. (Re)||3.3 Ohms|
|Effective piston area Sd||240 cm²|
|Linear Excursion (Xmax)||+/−6 mm|
|Force factor (BxL)||4.5 T m|
|Magnetic induction||0.85 T|
|Magnetic flux||400 µWb|
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